Bowling-pin.



E. G. WIL

BOWLING T|0N FILED MAR.29,1915

APPL 1,202,138. Patented Oct. 24,1916.

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EDGAR e. WrLILsoN, or APPLETON, WISCONSIN.

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BowLING-PIN;

I' I' .,"Spieciil-cation of Letters-Patent. Patentedcf. 2.4:, 1916.

Applicationled March 29,1915.. SeralNo. 17,608.

To all whom t may concern Be it known that I, EDGAR G. WILLsoN,

'a citizen of the United States, and resident of Appleton, in the county of Outagamie and State of Wisconsin, have invented new and useful Improvements in Bowling-Pins, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

This invention has for its object to provide a bowling` pin which will be more durable and less apt to be chipped and splintered at its base from the fact that it is given a special case hardening on the bearing surface of the base, and said surface is rounded or slightly beveled to avoid the formation of a sharp edge.

It is a wellknown fact that one of the first effects of wear in a bowling pin is the chipping and splintering of the base where the sharp edge of the base is caught against some projection while the pin is sliding across the alley or is bounding The present invention contemplates vthe avoidance of the formation of a sharp edge on the base of the pin, but more particularly relates to the case hardening of the bearing surface of the base to provide a hardened, polished surface on which the pin may freely slide, and suliiciently hard to resist any tendency toward chipping or splinterng.

With the above and other objects in view the invention consists inthe bowling pin as herein claimed and all equivalents.

Referring to the accompanying drawings, in which like characters of reference indicate the same parts in the different views,

Figure 1 is an elevation of a bowling pin constructed in accordance with this invention; Fig. 2 is an end view thereof showing the case hardened bearing surface; and, Fig. 3 is an enlarged sectional view of the base of the pin.

In these drawings 10 indicates the pin` proper which is of ordinary construction, except as to the formation of the base, where instead of being provided with a sharp edge around its bearing surface its bearing surface 11 is slightly beveled or rounded, as seen in Fig. 3. This has the effect of causing the edge of the bearing surface to clear sharp edges or a roughness in the surface on which the pin rests so as to permit it to freely slide without engaging such edge and causing it to chip or splinter.- The maple wood of which bowling pins are usually made is greatly inclined to splinter and crack, and the presence of the sharp edge on the base as heretofore, contributes to the tendency to chip by its ability to firmly engage some obstruction in the path of the pin, as upon two pins striking together and thus applying the force of the blow near the surface of the pin, and when directed outwardly or radially of the pin the result would very likely be the chipping or splintering of the pin. By beveling or rounding this surface there is less liability of such positive engagement, and by hardening the bearing surface it is rendered practically proof against chipping or splintering. I prefer to harden the bearing surface of the pin while the pin is still in the turning.

lathe and after it has had a coating of wax applied thereto and is highly polished on the-end as well as elsewhere. This hardening is performed by holding a piece of hard wood against the bearing end of the pin while the pin is turning in. the lathe, and the friction of such piece of wood -held against the end of the pin causes a heating and charring of the wood so that the wax inish enters more deeply into the pores of the wood, and the bearing surface of the pin is given an ebony-like iinish both as to color and the hard wearing quality thereof. The hardening of the end of the pin. is in the nature of a case hardening extending only a short distance from the surface. The pin is in this manner, however, provided with a dense, highly polished, hardened bearingsurface that will resist wear, and particularly will protect the pin against splintering or chipping at the base.

What I claim as new and desire to secure by Letters Patent is:

l. A bowling pin having a wax coating and a charred base with the wax coating penetrating therein to a greater depth.

2. A bowling pin having a wax coating Vcoating` to penetrate therein to a greater depth. In testimony whereof, I affix my signa- 10 ture, in presence of a Witness.

. f EDGAR G. VILLSON. Witness:

KATHERINE HOLT.

by an increased penetration of the Wax coating therein.

5. The method of forming bowling pins which consistsin coating the same With Wax and then turning in a lathe with agdull uncutting surface held against the base thereof to charthe saune and cause the Wax r ive'be'nts each,A by addressing the Commissioner o! Patents.

Copies of this patentv may be' obtained fo v Washington, D. C. 

